*/
#include <stdio.h>
+#include <stdint.h>
#include <limits.h>
+#include <errno.h>
#ifndef REGTEST
+#include <_PDCLIB_io.h>
-long int ftell( struct _PDCLIB_file_t * stream )
+long int _PDCLIB_ftell_unlocked( FILE * stream )
{
- /* TODO: A bit too fuzzy in the head now. stream->ungetidx should be in here
- somewhere.
- */
- if ( stream->pos.offset > ( LONG_MAX - stream->bufidx ) )
+ uint_fast64_t off64 = _PDCLIB_ftell64_unlocked( stream );
+
+ if ( off64 > LONG_MAX )
{
/* integer overflow */
- _PDCLIB_errno = _PDCLIB_EINVAL;
+ errno = ERANGE;
return -1;
}
- /* Position of start-of-buffer, plus:
- - buffered, unwritten content (for output streams), or
- - already-parsed content from buffer (for input streams)
- */
- return (long int)( stream->pos.offset + stream->bufidx - stream->ungetidx );
+ return off64;
+}
+
+long int ftell( FILE * stream )
+{
+ _PDCLIB_flockfile( stream );
+ long int off = _PDCLIB_ftell_unlocked( stream );
+ _PDCLIB_funlockfile( stream );
+ return off;
}
#endif
#ifdef TEST
#include <_PDCLIB_test.h>
-
#include <stdlib.h>
+#ifndef REGTEST
+#include <_PDCLIB_io.h>
+#endif
int main( void )
{
*/
/* The following functions delegate their tests to here:
fgetc fflush rewind fputc ungetc fseek
- flushbuffer seek fillbuffer
+ flushbuffer seek fillbuffer prepread prepwrite
*/
char * buffer = (char*)malloc( 4 );
FILE * fh;
- remove( "testfile" );
- TESTCASE( ( fh = fopen( "testfile", "w+" ) ) != NULL );
+ TESTCASE( ( fh = tmpfile() ) != NULL );
TESTCASE( setvbuf( fh, buffer, _IOLBF, 4 ) == 0 );
+ /* Testing ungetc() at offset 0 */
+ rewind( fh );
+ TESTCASE( ungetc( 'x', fh ) == 'x' );
+ TESTCASE( ftell( fh ) == -1l );
+ rewind( fh );
+ TESTCASE( ftell( fh ) == 0l );
+ /* Commence "normal" tests */
TESTCASE( fputc( '1', fh ) == '1' );
TESTCASE( fputc( '2', fh ) == '2' );
TESTCASE( fputc( '3', fh ) == '3' );
TESTCASE_NOREG( fh->bufidx == 0 );
/* Reading back first character after rewind for basic read check */
TESTCASE( fgetc( fh ) == '1' );
- TESTCASE( fclose( fh ) == 0 );
/* TODO: t.b.c. */
- remove( "testfile" );
+ TESTCASE( fclose( fh ) == 0 );
return TEST_RESULTS;
}